August 31, 1806
William Clark

all wet and disagreeable this morning.  at half past 11 <P.M.> last night the wind Shifted about to the N.W. and it began to rain with hard Claps of thunder and lightning the Clouds passd over and the wind Shifted about to the S W. & blew with great violence So much So that all hands were obliged to hold the Canoes & Perogue to prevent their being blown off from the Sand bar, however a Suden Squal of wind broke the cables of the two Small Canoes and with Some dificuelty they were got to Shore Soon after the 2 Canoes in which Sergt. Pryor and the indians go in broke loose with wiser and Willard in them and were blown quite across the river to the N E. Shore where fortunately they arived Safe, I Sent Sergt. Jo Ordway with a Small perogue and 6 men to prosue the 2 Canoes and assist them in effecting a landing, those 2 Canoes being tied together 2 men could not manage them, the wind Slackened a little and by 2 A.M. wind continud to blow and it rained untill day light all wet and disagreeable.  all the party examined their arms and put them in order and we Set out and proceeded on down.  Saw Several Indians on the hills untill we passed the Island of Cedar [The later Little Cedar Island, SD, which the party first passed on September 10, 1804.]  9 A. m    the morning Cloudy and wind down the  the river at 4 P.M. passed the doome [Dome. First mentioned on September 7, 1804, and then called a cupola, it was identified as the "Tower" in Nebraska; it is now called Old Baldy. It is the Steeple on Clark's map.]  and lowest village of Barking Squirels.  this is also the highest up the river where I observed the fox Squirel [Fox Squirrel, Sciurus niger.]  in the bottom above the doome on N. E Side I killed 2 fox Squirels.  we Saw no game of any kind to day as the banks as usial.  the Sun Shone with a number of flying Clouds.  we encamped on the N.E. Side [They were near the mouth of Chouteau Creek, "Goat Creek" on Clark's map.]   a little below our Encampment of the 5th of Septr. on no preserve Island haveing Come 70 Miles.

August 31, 1806
William Clark

[Remarks]

1st rained last night and all day to day at intervales
2nd rained a little last night and Several Showers this morng
3d Musquetors troublesom. I arived at the Missouri.   heavy dew.
4th Rochejhone falling much faster than the Missouri
5th Musquetors excessively troublesom  both rivers fallling.
6th rained hard last night with Thunder Lightning & hard wind from S.W.  killed a white Bear & Bighorn.
7th Commenced raining at daylight and contined at intervals all day.  air Cool.
8th air cool. Sergt. pryor arrive in Skin Canoes.
9th a heavy dew.  air cool and clear   found red goose berries [See August 9, 1806.] and a dark purple current & Service's
10th found a Species of Cherry [Pin Cherry. The "read heart" cherry is probably the Black Cherry; See Lewis's entry of August 12, 1806.] resembling the read Heart cherry of our country.
11th sarvis berries in abundance & ripe.
12th Capt. Lewis overtake me with the party
13th a fiew drops of rain last night at 8 P.M with hard S W wind
14th Mandan Corn <is r[ipe?]> now full and beginning to harden
16th Northern lights [Aurora borealis.] Seen last night in forpart of the night.
17th leave the Mandans
18th rained moderately last night in forpart of the night.
19th Comenced raining at 5 A.M and Continued with a hard wind untill [blank]
21st rained a little in the course of the night.   at day a violent hard Shower for 1/2 an hour
22nd rained the greater part of last night.   grape and plums ripe.   The rains which have fallen in this month is most Commonly from flying Clouds which pass in different directions, those Clouds are always accompanied with ahrd winds and Sometimes accompanied with thunder and lightning--   The river has been falling moderately Since the third of the month.  the rains which has fallen has no impression on the river than Causing it to be more muddy and probably prevents its falling fast.--.
23d rained at 10 A M. & 4 P M  hard wind
24th wind blew hard all day  grapes in abundance.
26th Heavy dew this morning.  Saw a pilecan
27th first Turkeys at Tylor River above the big bend
29th Some rain this morning only a fiew drops and at 10 A.M.
30th a fiew drops of rain last night  I Saw the Tetons.
31st rained most of last night with T.Li. & a hard wind from the S.W. some rain to day.

August 31, 1806
John Ordway

we had hard Showers of rain all last night and verry high winds caused one of our canoes broke loose and I took another canoe and to take it back and with Some difficulty goot it back to Camp    a verry disagreeable night.   we Set out this morning as usal and roed on hard all this day without makeing any halt to cook.    Musquetoes where we Camped on N. Side-- [Near the mouth of Chouteau Creek.]

August 31, 1806
Patrick Gass

There was a cloudy morning, after a disagreeable night of wind and hard rain.  We set out early; went on very well all day, and in the evening encamped, where we found the Musketoes very troublesome.